/**
 * Created by zhangb on 2015/9/6.
 */

var EventUtil = {

    addHandler:function(element,type,handler){
        if(element.addEventListener){
            element.addEventListener(type,handler,false);
        }else if(element.attachEvent){
            element.attachEvent("on"+type,handler);
        }else{
            element["on"+type] = handler;
        }
    },
    removeHandler:function(element,type,handler){
        if(element.removeEventListener){
            element.removeEventListener(type,handler,false);
        }else if(element.detachEvent){
            element.detachEvent("on"+type,handler);
        }else{
            element["on"+type] = null;
        }
    }

};

EventUtil.addHandler(form,"submit",function(event){
    event = EventUtil.getEvent(evnet);
    var target = EventUtil.getTarget(evnet);

    var btn = target.elements["submit-btn"];

    btn.disabled = true;
});
